diff --git a/Il2CppInspector.GUI/MainWindow.xaml b/Il2CppInspector.GUI/MainWindow.xaml
index 1f53649..ef63427 100644
--- a/Il2CppInspector.GUI/MainWindow.xaml
+++ b/Il2CppInspector.GUI/MainWindow.xaml
@@ -3,9 +3,10 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:Il2CppInspectorGUI"
         xmlns:gif="https://github.com/XamlAnimatedGif/XamlAnimatedGif"
         mc:Ignorable="d"
-        Title="Il2CppInspector" Height="570" Width="900" Background="White">
+        Title="Il2CppInspector" Height="590" Width="970" Background="White">
     <Window.Resources>
         <!-- Our favourite colours -->
         <SolidColorBrush x:Key="MicrosoftBlue" Color="#00A2ED"/>
@@ -82,6 +83,11 @@
                 </TextBlock.Text>
             </TextBlock>
         </DataTemplate>
+
+        <!-- Namespace checkbox tree items -->
+        <HierarchicalDataTemplate x:Key="NamespaceTreeItemTemplate" DataType="{x:Type local:CheckboxNode}" ItemsSource="{Binding Children}">
+            <CheckBox Focusable="False" IsChecked="{Binding IsChecked}" VerticalAlignment="Center" Content="{Binding Name}"/>
+        </HierarchicalDataTemplate>
     </Window.Resources>
 
     <!-- Window content -->
@@ -101,7 +107,7 @@
                 <!-- List of images in the binary file -->
                 <Label DockPanel.Dock="Top" Foreground="{StaticResource WindowsBlue}" FontSize="18">Select image</Label>
 
-                <ListBox DockPanel.Dock="Top" Name="lstImages" ItemTemplate="{StaticResource ImageListTemplate}" Height="80"/>
+                <ListBox DockPanel.Dock="Top" Name="lstImages" ItemTemplate="{StaticResource ImageListTemplate}" Height="80" SelectionChanged="LstImages_OnSelectionChanged"/>
 
                 <!-- Image details view -->
                 <Label DockPanel.Dock="Top" Foreground="{StaticResource WindowsBlue}" FontSize="18">Image information</Label>
@@ -182,10 +188,10 @@
 
                 <DockPanel DockPanel.Dock="Top">
                     <!-- List of namespaces to export -->
-                    <StackPanel DockPanel.Dock="Right">
-                        <Label Foreground="{StaticResource WindowsBlue}" FontSize="18">Namespaces</Label>
-                        <TreeView DockPanel.Dock="Right" Width="200" Margin="5" MinHeight="60"></TreeView>
-                    </StackPanel>
+                    <DockPanel DockPanel.Dock="Right">
+                        <Label DockPanel.Dock="Top" Foreground="{StaticResource WindowsBlue}" FontSize="18">Namespaces</Label>
+                        <TreeView DockPanel.Dock="Bottom" Name="trvNamespaces" ItemTemplate="{StaticResource NamespaceTreeItemTemplate}" Width="220" Margin="5"></TreeView>
+                    </DockPanel>
 
                     <!-- Settings -->
                     <StackPanel DockPanel.Dock="Left">
@@ -209,7 +215,7 @@
                             </StackPanel>
                         </GroupBox>
                         <CheckBox Margin="2">Suppress pointer, offset and index metadata comments</CheckBox>
-                        <CheckBox Margin="2">Attempt to generate output that compiles</CheckBox>
+                        <CheckBox Margin="2">Attempt to generate code that compiles</CheckBox>
                         <CheckBox IsChecked="True" Margin="2">Place assembly-level attributes in separate files</CheckBox>
                         <Separator Margin="5"/>
                         <RadioButton GroupName="grpOutputType" VerticalContentAlignment="Center" FontSize="18" Foreground="{StaticResource MicrosoftGreen}">Visual Studio solution</RadioButton>
@@ -226,6 +232,7 @@
                         </DockPanel>
                         <Separator Margin="5"/>
                         <RadioButton GroupName="grpOutputType" VerticalContentAlignment="Center" FontSize="18" Foreground="{StaticResource MicrosoftGreen}">IDAPython script</RadioButton>
+                        <TextBlock TextWrapping="WrapWithOverflow">No configuration required for IDA script output</TextBlock>
                     </StackPanel>
                 </DockPanel>
             </DockPanel>
diff --git a/Il2CppInspector.GUI/MainWindow.xaml.cs b/Il2CppInspector.GUI/MainWindow.xaml.cs
index 1231981..b5b3445 100644
--- a/Il2CppInspector.GUI/MainWindow.xaml.cs
+++ b/Il2CppInspector.GUI/MainWindow.xaml.cs
@@ -16,6 +16,7 @@ using System.Windows.Navigation;
 using System.Windows.Shapes;
 using Microsoft.Win32;
 using Il2CppInspector;
+using Il2CppInspector.Reflection;
 
 namespace Il2CppInspectorGUI
 {
@@ -86,6 +87,7 @@ namespace Il2CppInspectorGUI
                     rectModalLightBoxBackground.Visibility = Visibility.Hidden;
 
                     lstImages.ItemsSource = app.Il2CppModels;
+                    lstImages.SelectedIndex = 0;
                 }
                 else {
                     areaBusyIndicator.Visibility = Visibility.Hidden;
@@ -98,13 +100,54 @@ namespace Il2CppInspectorGUI
         /// <summary>
         /// Reset binary and metadata files and start again
         /// </summary>
-        /// <param name="sender"></param>
-        /// <param name="e"></param>
         private void BtnBack_OnClick(object sender, RoutedEventArgs e) {
             rectModalLightBoxBackground.Visibility = Visibility.Visible;
             lstImages.ItemsSource = null;
             btnSelectBinaryFile.Visibility = Visibility.Hidden;
             btnSelectMetadataFile.Visibility = Visibility.Visible;
         }
+
+        /// <summary>
+        /// User has selected an image
+        /// </summary>
+        private void LstImages_OnSelectionChanged(object sender, SelectionChangedEventArgs e) {
+            // Selection has been removed?
+            if (((ListBox) sender).SelectedItem == null) {
+                trvNamespaces.ItemsSource = null;
+                return;
+            }
+
+            // Get selected image
+            var model = (Il2CppModel) ((ListBox) sender).SelectedItem;
+
+            // Get namespaces
+            var namespaces = model.Assemblies.SelectMany(x => x.DefinedTypes).GroupBy(t => t.Namespace).Select(n => n.Key);
+
+            // Break namespaces down into a tree
+            var namespaceTree = deconstructNamespaces(namespaces);
+
+            // Populate TreeView with namespace hierarchy
+            trvNamespaces.ItemsSource = namespaceTree;
+        }
+
+        private IEnumerable<CheckboxNode> deconstructNamespaces(IEnumerable<string> input) {
+            if (!input.Any())
+                return null;
+
+            var rootAndChildren = input.Select(s => string.IsNullOrEmpty(s)? "<global namespace>" : s)
+                                    .GroupBy(n => n.IndexOf(".") != -1 ? n.Substring(0, n.IndexOf(".")) : n).OrderBy(g => g.Key);
+
+            return rootAndChildren.Select(i => new CheckboxNode {Name = i.Key, IsChecked = true, Children = deconstructNamespaces(
+                i.Where(s => s.IndexOf(".") != -1).Select(s => s.Substring(s.IndexOf(".") + 1))
+                )}).ToList();
+        }
+    }
+
+    // Replacement for TreeViewItem that includes checkbox state
+    internal class CheckboxNode
+    {
+        public string Name { get; set; }
+        public bool IsChecked { get; set; }
+        public IEnumerable<CheckboxNode> Children { get; set; }
     }
 }